What is the output of the following code snippet?

class CashRegister

$\{$

public:

void set$\_$item$\_$count$($int count$)$;

private:

int item$\_$count;

$\}$;

void CashRegister::set$\_$item$\_$count$($int count$)$

$\{$

item$\_$count $=$ count;

$\}$

int main$()$

$\{$

CashRegister reg$1$;

reg$1.$set$\_$item$\_$count$(15)$;

cout $<<$ "Item count: $"<<$ reg$1.$item$\_$count;

return $0$;

$\}$

Question $6$ options:

Item count:

Item count: $15$

The code snippet does not compile.

Item count: $0$